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hv: pirq: add a header for common data struct and APIs

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- add a commont head file include/common/irq.h, to include the common data
  structure and APIs;
- move the common data struct and APIs from arch/x86/irq.h to the common header.

Signed-off-by: Yan, Like <like.yan@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Yan, Like
2018-06-20 16:30:55 +08:00
committed by Xie, nanlin
parent d5912a4d16
commit f74675ce21
4 changed files with 97 additions and 93 deletions
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90
hypervisor/include/common/irq.h Normal file
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/*
* Copyright (C) 2018 Intel Corporation. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef COMMON_IRQ_H
#define COMMON_IRQ_H
enum irq_mode {
IRQ_PULSE,
IRQ_ASSERT,
IRQ_DEASSERT,
};
enum irq_state {
IRQ_NOT_ASSIGNED = 0,
IRQ_ASSIGNED_SHARED,
IRQ_ASSIGNED_NOSHARE,
};
enum irq_desc_state {
IRQ_DESC_PENDING,
IRQ_DESC_IN_PROCESS,
};
typedef int (*dev_handler_t)(int irq, void*);
struct irq_request_info {
/* vector set to 0xE0 ~ 0xFF for pri_register_handler
* and set to VECTOR_INVALID for normal_register_handler
*/
uint32_t vector;
dev_handler_t func;
void *dev_data;
bool share;
bool lowpri;
char *name;
};
/* any field change in below required irq_lock protection with irqsave */
struct irq_desc {
uint32_t irq; /* index to irq_desc_base */
enum irq_state used; /* this irq have assigned to device */
enum irq_desc_state state; /* irq_desc status */
uint32_t vector; /* assigned vector */
void *handler_data; /* irq_handler private data */
int (*irq_handler)(struct irq_desc *irq_desc, void *handler_data);
struct dev_handler_node *dev_list;
spinlock_t irq_lock;
uint64_t *irq_cnt; /* this irq cnt happened on CPUs */
uint64_t irq_lost_cnt;
};
struct dev_handler_node {
char name[32];
void *dev_data;
dev_handler_t dev_handler;
struct dev_handler_node *next;
struct irq_desc *desc;
};
uint32_t irq_mark_used(uint32_t irq);
uint32_t irq_desc_alloc_vector(uint32_t irq, bool lowpri);
void irq_desc_try_free_vector(uint32_t irq);
uint32_t irq_to_vector(uint32_t irq);
uint32_t dev_to_irq(struct dev_handler_node *node);
uint32_t dev_to_vector(struct dev_handler_node *node);
struct dev_handler_node*
pri_register_handler(uint32_t irq,
uint32_t vector,
dev_handler_t func,
void *dev_data,
const char *name);
struct dev_handler_node*
normal_register_handler(uint32_t irq,
dev_handler_t func,
void *dev_data,
bool share,
bool lowpri,
const char *name);
void unregister_handler_common(struct dev_handler_node *node);
typedef int (*irq_handler_t)(struct irq_desc*, void*);
void update_irq_handler(uint32_t irq, irq_handler_t func);
#endif /* COMMON_IRQ_H */